Transporting and dumping equipment



April 18, 1961 e. R. DEMPsTER ET AL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 1 Filed. Oct. 8, 1956INVENTOKS BY g-mm;

ATTORNEYS April 18, 1961 ca. R. DEMPSTER EI'AL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 2 Filed Oct. 8, 1956April 18, 1961 G. R. DEMPSTER ETAL Filed Oct. 8, 1956 TRANSPORTING ANDDUMPING EQUIPMENT 5 Sheets-Sheet 3 ATTORNEYS April 18, 1961 G. R.DEMPSTER EIAL 2,980,268

TRANSPORTING AND DUMPING EQUIPMENT Filed Oct. 8, 1956 5 Sheets-Sheet 4uw" I Mv ATTORNEYS April 18, 1961 G. R. DEMPSTER ETAL 2,930,268

TRANSPORTING AND DUMPING EQUIPMENT 5 Sheets-Sheet 5 Filed Oct. 8, 1956ATTORNEYS R. Dempster, No. 2,281,183

assaas s Patented Apr. 18, Iiiifii 2,980,268 TRANSPORTING AND DUWINGEQUETVENT Filed Oct. 8, 1956, Ser. No. 614,683 9 Claims. (Cl. 214-75)This invention relates to improvements in transporting and dumpingequipment, and more particularly to the type of equipment set forth inthe prior patent of George granted April 28, 1942.

7 Equipment of the type set forth in u as manufactured and usedheretofore, comprises a hoisting unit upon which a container is adaptedto be supported during transportation to a desired point for dumping.The hoisting unit comprises a frame having a bucket rest or supportmounted thereon upon which the container is adapted to be seated duringtransportation. A boom is mounted on the frame and has means forattachment to the container for lifting the container onto the bucketrest or support. A skid frame is also mounted on the frame of thehoisting device against which the container may rest and be drawn up inmoving to its supported and dumping positions.

The bucket rest or support for the container is usually so located onthe hoisting frame as to dispose the center of gravity of the containerand its contents substantially "x1e of the vehicle or just slightlyforward of the rear axle where the major part of the load can be takn bythe latter during transportation of the vehicle. Containers of standardor conventional sizes can be accommodated on the bucket rests ofhoisting units of However, for relatively lightweight material'sextremely large or elongated containers are often desirable. If suchcontainers, however, were used on conventional sized hoisting units,they would overhang danger of falling on the vehicle becomingoverbalaiiced either during picking up or dumping. No adequate provisionhas been made heretofore for handling such abnormally large containersas is often desirable. v

One object of this invention is to overcome the objections notedespecially for abnormally large or long containers that may beaccommodated on the bucket rest and yet will not seriously overhang theback end of the vehicle during transportation.

Another object of the invention is to improve the construction of thebucket rest to accommodate containers of different sizes, both theconventional sized containers and those that are abnormally large, andyet to provide for efiective support thereof on the vehicle.

Still another object of the invention is to provide for the shifting ofthe bucket rest to respectively, so as to desired size in either Theextended bucket rests hoisting unit or asattachthe aforesaid patent,

ments for the conventional bucket rests, slid-able there over andcapable of shifting movement to retracted and extended positions.Suitable means may be used for eifecting the shifting of the bucketrests to their respective positions or these may be shifted by hand,according to the diiferent embodiments set forth in the drawings.

In the accompanying drawings:

Fig. 1 is a side elevation of a hoisting unit and container supported onthe bucket rests in retracted position.

Fig. 2 is a similar view showing an enlarged container mounted on theextended bucket rests.

3 is a perspective view of the bucket rests in extended position andsupporting the container.

Fig. 4 is a top plan view of one of the bucket rests with one form ofoperating means therefor;

Fig. 5 is a side elevation thereof;

Fig. 6 is a perspective view showing the bucket rests in retractedpositions; 7

Fig. 7 is a cross-section through the mounting of a bucket rest,substantially on line 7-7 in Fig. 5;

Fig. 8 is a side elevation showing a modification of the operating meansfor the bucket rests; and

Fig. 9 is a side elevation, showing a further modification of the.bucket rest extension therefor. I

The invention is illustrated as applied to a hoisting unit substantiallyof thecharacter set forth in the aforesaid patent of George R. Dempster,No. 2,281,183, granted Apr'l 28, 1942. This hoisting unit is mounted ona truck chassis, the frame of whichis indicated generally by the numeral1, supported on wheels 2. The cab is shown at 3.

Mounted on the chassis frame 1 is a subframe 4 extending lengthwise ofthe vehicle in this embodiment of the invention. A boom is indicated at5 comprising a pair of spaced arms on opposite sides of the chassis,pivotally supported at 6 on the subframe 4. The boom 5 is adapted to beraised and lowered with respect to the sub'fra'me 4 by hydraulic powerdevices generally indicated at '1'.

At the rear end of the subfrarne 4 and mounted thereon are bucket restsrests 8 are located on opposite sides subframe 4 and are formed ofstructural members rigidly secured to the subframe. Each of the boomrests usually has an inclined upperedge surface shown at 9 upon which acontainer is adapted to be seated during transportation of the unit; I V

The container is shown, in Fig.1 at C, being a conventional form of drop4 which does not-unduly overhang the rear end of the hoisting unit. Eachcontainer usually has lifting pins 1% and operating means the liftingpins 10 through flexible cable devices generally indicated at 11, andwhich usually comprise lifting chains. A movable carriage is shown at 12operatively mounted supported thereon. Each of the extensions 15 is U}shaped 'in"cros's-'section,'enib"racihg' the upper edge of bottomcontainer, of normal size,

solenoids.

/ power devicesu29 maybe the bucket rest 8 and being connected therewithby a transverse bolt 16 as shown in Figs. 4, and-7. The" The extensions15 may be moved with respect to the essence for secure support of thecontaine some extension of the boom rest surfaces 9 is needed In thatevent," the extensions 15 are operated to be moved to the extendedpositions shown in Figs. 3 to 5 and thereby extend the surfaces 9suihciently toform secure supports underneath the elongated container C.The length of these extensions 15 will depend upon the size of thecontainer to be handled thereon but shouldbe sufficient so that themajor part of the load will rest surfaces with no appreciable danger oftipping of the container off these surfaces during transportation. Thecontainer rests against the movable carriage 12 at the forward end ofthe boom rest surfaces 9 in" an inbucket rests 8 either manually or bypower devices'such as hydraulic, vacuum orair cylinders, linkage orelectric As shown in Figs. 3 to 6, a bell crank lever 18 is pivotallyconnected at 19 with each of the extension members 15, at one end of thebell crank lever 18,,while the opposite end of said bell crank lever ispivotally supported at 20 on the subframe 4. A rod 21 extends lengthwiseof the subframe 4 and is pivotally connected at 22 to the bell cranklever 18 intermediate its ends. 7 Any suitable means may be used asdesired for actuating the rods 21 to move the extension members to.

extended and retracted positions, respectively. Such actuating means maybe operated manually or by power,

examples of which are shown in Figs. 4, S and 8, 7

As illustrated in Figs. 4 and S, lever arms 23 areconnectedwithrespectivepush and pull'rods 21 by. being v are locatedforward of clined position as will be apparent from thefdrawings. Someoverhang beyond the ends of the extensions 15 is not objectionable solong as the major part of the load is carried forward of the rear endsof these extensions.

The boom rest extensions 15 in their retracted positions therear apronbe drawn bythe'hoisting unit container is adapted to Sand lifting chains11.

and particularly by the boom When thus lifting the container up thehoistingunit, the carriage 12 is in itsrearmost posipivoted to the freeends thereof at 24. Each lever arm 23 is pivotally supportedat 25 on amounting bracket 26 secured on the subframe member 4. Also fixed to thelever arms 23' at the pivots 25 are lever arm extensions 27 which areconnected together by ahandle 28 extending transversely across thehoisting unit. .The extension lever arms 27 being fixed to the arms 23will causemovement thereofand of the push and pull rods 21 uponmanipulation of the handle 28, to the different positions illustrated'byfull lines and dotted lines in Fig. 5, thereby to move the extensionmembers 15 between the extended and retracted positions thereof as willbe apparent from:

Fig. 5.

It is also possible, as noted above, to use suitable power means foroperating the push and pull rods 21. by conthereto as illustrated inFig. 8 and the numeral 29. Eachof the connected between the respecandthelmounting brackets 26 necting power devices designated generally bytive push and pull rods 21 substantially in the same relationindicatedin/Figs. 5

be used for this i and 8. Any suitable power devices may purpose, suchas hydraulic, vacuum or air cylinders,

electric'solenoids or the like, and which are generically illustrated inFig. 8.

The operation of the apparent from the foregoing with the illustrationsin the drawings. 15 are shown in difierent positions according to'thesize of container that is to be handled by the hoistingunit Theoperation of the hoisting means is described more in detail in the priorpatent of George R. Dempster, No.

boom restextensions' will be description in connection These extensions2,281,183, and need not be repeated herein since these hoisting unitsare well known in the art.

Where containers of the normal conventional sizes, such as indicated atC in Figs. 1 and 6, are tobe handled on the hoisting unit, the boom restextensions 15 are to their retracted positions and the boom'rests withtheir moved inclined upper surfaces 9 will be sutfieiently extended tosupportthe container transportation. This also locates the center ofgravity securely' on the vehicle during ofthe load substantially over.the rear axle or slightly 7 forwardthereof.

' For an abnormally large container that would not be accommodated onthe boom rest surfacesv 9 without materialoverhang, as indicated' atl Cfin igs. 2 3,

tion as indicatedin Fig. 6..

movement will not be extensions 15 which the boom rests, the extensions15 can be projected to their extendedpositions shown in Figs.,3 andSunderneath or ,by the 7 power means described above, and thereafteruponmnvementof the carriage 12 forwardtothe front ends of the boom restsurfaces, as

illustrated in Fig.7 5, the. container can be set down uponthe boom restsurfaces as in Fig. 3. Inthis position it can be carried to the point ofdumping and thereafter it can be moved to the point of use for refillingIn the modification illustrated in Fig.9, the bucket rest 1 andextension, and parts which correspond with those I described above, areidentified by the same numerals applied thereto. In this form, theextensions 15, instead of being operated by bell cranks 158, or, othermeans at the front ends of the extensions, have the push bars connectedwith the rear end portions, thereof.

Each of the extensions [15 has apush barfio'pivotally skirt on" theextension, at the The rear endof the push bar 30 of a lever arm 33; Thelever 33 is permanently fixed at its" lever arm 34, and f connected withthe lateral point indicated at 31, is pivotally connected at32 to thedepending end upper end portion to an upstanding these leverarrns 33-34are pivotally mounted at 35 on a. bracket 36 on the subframe 4. p thelever arm 34 is a contact bar isfixed to the leverarm 34 by a lockingclutch engagement therewith, indicated generally 1 At theupper end of37, one end of which at 38. The opposite end of the contact/bar'37 has alaterally extending rounded nose portion, cated at 39, inposition toengage thecarriage hoisting means beneath'a 12. This shoulder may beformed by welding a clip to the forward face of thecarriage channel,or'by other suit- 12 of the able means as desired. 7

Normally, tions relative to the, positions by coiled springs 41 that areanchored in suitable'positions on the subframe 4j and connected with the1 depending arms 35., These normalpositions areillustrated by dottedlines in Fig. 9,

therefrom that the 1 springs 41 also project the. contact bars 37 to theforward dotted line'positions; illustrated in the drawing. a

be carried on the boonr 50 upwhich the for transportation on Thus, thecontainer can'jbe, drawn up along the skid surfaceon the carriage andinterferred with by .thebooin restthen would 'be in their retractedpositions, as shown therein. After the container is thus,

" raised'to a position above the container either by 'hand hereitscontents can be discharged generally indistop shoulder 40,011 thecarriage the 'extensions15'are their retracted posii bucket rests8,.being. held in such and it will be apparent .When an extrawidecontainer hasbeen picked up by the hq m s F 9 e d 9. ,thasa sse...2.; i

moved inward with the carriage, as described above. When the channel onthe forward face of the carriage reaches the dotted line positionillustrated in Fig. 9, the forward face thereof engages the nose 39 oneach contact bar 37. 'Ihis contact bar 37 is fixed in relation to thelever arm 34 so that it cannot swing with respect thereto, and thecontinued forward movement of the carriage l2 pushes on the contact bar37, thereby swinging the lever arm 34 about the pivot 35, thus movingthe lever arm 33 against the tension of the spring 41 to the full lineposition shown in Fig. 9. The lever 33 causes forward linear movementof'the push bar 30 to project the extension 15 to the full line positionshown in Fig. 9, beneath the enlarged container C (Fig. 2),v Thecontainer then may be set down on the bucket rest 8 and extension 15,and will be supported effectively thereon during transportation.

As soon as the container is picked up by the hoisting means ofi thebucket rest 8 and extension 15, and the carriage 12 moved rearward ofthe subframe 4 beyond the point indicated in dotted lines in Fig. 9, thesprings 41 acting on the lever arms 33 will swing the latter to thedotted line positions shown, thereby pullingthe bars 30 and extensionsv15 to their retracted dotted line positions.

When the extensions 15 are not needed, they can be put out of operationmerely by swinging the contact bars 37 to the intermediate dotted linepositions shown in Fig. 9. This may be done by loosening the clutchconnections 38 and swinging these contact bars back. The lever arms 34and contact bars 37 are displaced laterally of the channels of thecarriage 12 so as not to engage the latter when the nose portions 39 aremoved to such retracted positions. These nose portions normally overlapthe rear faces of the channels, forming lateral projections on thecontact bars.

We have provided a very simple and effective extension of the boom restson hoisting units which allows us to carry extra long containers, thecenter of gravity of which would not allow them to be carried onconventional bucket rests. The extensions are simple and inexpensive andmay be added to conventional equipment without appreciable modificationand at little cost.

While the invention has been illustrated and described in certainembodiments, it is recognized that other variations and changes can bemade therein without departing from the invention, as set forth in theclaims.

We claim:

1. In transporting equipment adapted to be mounted on a vehicle chassisand including a pair of bucket rests having supporting surfaces adaptedto be mounted on the rear end of the chassis to receive a containerthereon, and means for lifting a container to a seated position on thesupporting surfaces of the bucket rests, the combination therewith, ofextension members slidably mounted on the rear ends of the bucket reststo support an oversized container, each of the extension members beingsubstantially U-shaped in cross-section and embracing the supportingsurface of a bucket rest, and means connected to said chassis andextension members for mounting said extension members to extended andretracted positions substantially in alignment with the supportingsurfaces of the respective bucket rests to cooperate therewith insupporting the container.

2. In transporting equipment adapted to be mounted on a vehicle chassisat the rear end thereof and including a pair of bucket rests havingsupporting surfaces adapted to receive a container thereon, and meansfor lifting a container to a seated position on the supporting surfacesof the bucket rests, the combination therewith, of extension members,each of the extension members being substantially U-shaped incross-section and embracing the supporting surfaces of the bucket rests,and means mounting the extension members on the bucket rests for slidingmovement to extended and retracted positions with re- 6 spect theretosubstantially in alignment with the supporting surfaces of therespective bucketrests to cooperate therewith in supporting thecontainer, bell crank levers connected with the extensions, and push andpull rods con'-. nected with the bell crank levers for moving saidextensions with respect to the bucket rests.-

3. In transporting equipment, the combination with a vehicle chassishaving a depending apron at the rear end thereof, of a hoisting unitmounted on the vehicle chassis comprising a pair of bucket restsextending forwardly of the apron with supporting surfaces inclinedtoward the rear of the vehicle chassis, a container mounted on thebucket rests and extending rearwardly of the apron therefrom, hoistingmeans for raising and lowering the container with respect to the bucketrests and for moving the container to a seated position on thesupporting surfaces thereon, and extension members slidably mounted "onthe rear ends of the bucket rests to support an oversized con tainer andarranged substantially in alignment with the supporting surfaces of thebucket rests and extending rearwardly of the apron underlying andsupporting the container, and means connected to said chassis andextension members for moving said extension members to extended andretracted positions with respect to said bucket rest.

4. In transporting equipment adapted to be mounted on a vehicle chassisand including a pair of inclined bucket rests having supporting surfacesadapted to be mounted on the rear end of the chassis to receive acontainer thereon, and means for lifting a container to a seatedposition on the bucket rests, the combination therewith, of extensionmembers slidably mounted on the rear ends of the bucket rests to supportan oversized container and arranged substantially in alignment with thesupporting surfaces of the bucket rests, and means connected to saidchassis and extension members for moving said extension members toextended and retracted positions with respect to said bucket rests inalignment with the supporting surfaces to support the container thereon.

5. In transporting equipment the combination with a vehicle chassishaving a depending apron at the rear end thereof, a pair of bucket restsmounted on the vehicle chassis forwardly of said depending apron andhaving supporting surfaces thereon, an oversized container seated uponthe supporting surfaces, means mounted on the vehicle chassis forraising and lowering the container with respect thereto, U-shapedextension members slidably mounted on the supporting surfaces of thebucket rests and extending rearwardly beyond and upright plane throughthe depending apron in underlying supporting relation with thecontainer, and means connected to said chassis and extension members formoving the extension members to extended and retracted positions withrespect to the bucket rests.

6. In transporting equipment adapted to be mounted on a vehicle chassisat the rear end thereof and including a bucket rest adapted to receive acontainer thereon, and means for lifting a container to a seatedposition on the bucket rest, the combination therewith, of an elongatedextension member, means mounting one end of the extension member on thebucket rest for lengthwise sliding movement relative thereto, and meansfor rocking the opposite end portion of said extension member verticallyduring the sliding adjustment thereof.

7. In transporting equipment adapted .to be mounted on a vehicle chassisand including a bucket rest adapted to be mounted on the rear end of thechassis to receive a container thereon, and means for lifting acontainer to a seated position on the bucket rest, the combinationtherewith of an extension member slidably mounted on the rear end of thebucket rest to support an oversized container, and means connected tosaid chassis and extension member for moving said extension member toextended and restricted positions with respect to said bucket rest.

-8. In transporting equipment adapted tohe mounted on a vehicle chassisand including a bucket rest adapted to bemouinted on the rear end of thechassis to receive a' container thereon, ,means for lifting a containerto a seated-position on the bucket rest, the combination therewith, ofan extension member slidably mounted on the rear end of the bucketrestto supportan oversized container, said extension member ,beingmovable to extended 'and retracted positions with respectito said bucketrest, and means movable by the forward-movement of the container'whenlifted above the bucket rest by said lift 7 ing means to automaticallymove the extension member; to'the extended position 9. 1n transportingequipment on a vehicle chassis and including abucketrest adapted toextended and retracted bucket rest. 11

adaptedtobe mounted l to be mounted on the'rearend of the chassis toreceive a container thereon,and means for iiftinga container toaseatedposition on .the bucket rest, the combination therewith, of anextension; member. slidably; mounted on the 7 rear end of the bucketrestto supportian oversized con tainer, andlever means connected to saidchassis and extension member for moving said extension membe'f positions:with respect to said ence Cited in the fiie'of atent Brooks,- May 7,1940 D 3,194

Apr. ,28, 1942 Apr. 26, 1949 Germany Mar; 29, 1954

